levels.register_basic('wood_0', 'Wood Boards 0', 'wood')
levels.register_basic('wood_1', 'Wood Floor 1', 'wood')
levels.register_basic('wood_2', 'Wood Floor 2', 'wood')
levels.register_basic('wood_3', 'Wood Floor 3', 'wood')
levels.register_basic('wood_4', 'Wood Floor 4', 'wood')
levels.register_basic('wood_5', 'Wood Floor 5', 'wood')
levels.register_basic('wood_6', 'Wood', 'wood')
levels.register_basic('wood_7', 'Wood', 'wood')
levels.register_basic('wood_8', 'Wood', 'wood')

levels.register_alpha('leaves_0', 'Leaves', '')
levels.register_alpha('leaves_1', 'Leaves', '')
levels.register_alpha('leaves_2', 'Leaves', '')
levels.register_alpha('leaves_3', 'Leaves', '')
levels.register_alpha('leaves_4', 'Leaves', '')
levels.register_alpha('leaves_5', 'Pine Needles', '')
levels.register_alpha('leaves_6', 'Autumn Leaves', '')

levels.register_tube('tree_0', 'Acacia Tree Trunk', 'wood')
levels.register_tube('tree_1', 'Oak Tree Trunk', 'wood')
levels.register_tube('tree_2', 'Willow Tree Trunk', 'wood')
levels.register_tube('tree_3', 'Birch Tree Trunk', 'wood')
levels.register_tube('tree_4', 'Jungle Tree Trunk', 'wood')
levels.register_tube('tree_5', 'Dark Oak Tree Trunk', 'wood')
levels.register_tube('tree_6', 'Acacia Tree Trunk', 'wood')
levels.register_tube('tree_7', 'Aspen Tree Trunk', 'wood')
levels.register_tube('tree_8', 'Jungle Tree Trunk', 'wood')
